Improvement in tinmen s forming-tools



UNITED STATES PATENT OFFICE.

WILLIAM LI. HENDERSON, or FRANKLIN, INDIANA.'

IMPROVEMENT IN TINIVI'ENS FORMING-TOOLS.

Specification forming part of Letters Patent No. 54,341, dated May 1', 1866 antedated April 16, 1866.

To all whom it 'may concern:

Be it known that I, WILLIAM H. HENDER- SON, of Franklin, Johnson county, and State of Indiana, have invented a new and useful Improvement in Tinmens Forming Tools, of which the following is a full and clear description, reference being had to the accompan yin g drawi n gs, makin ga part of this specilication.

My improvement relates to a machine by meansof which much economy both in time and labor accrues to the operator on sheet metal.

Figure l represents a perspective view of my improved forming-tool, showing the position ot' the various parts ot' the forming-tool previous to operation. Fig. 2 is a transverse section of the machine, showing the Inode ot' operating upon the metal. Fig. 3 is a longitudinal section.

A represents the frame of the machine. B is the clam pin g-plate, which is pivoted to frame A at b. To the clamping-plate B is pivoted, longitudinally, the forming-plate C, operated upon by means of lever c.

D is the clamp-handle, so constructed as to secure the clamping-plate B in close contact with frame A. The frame A is oblon g and is beveled off on its sides and ends.

In frame AA are slots a, which Inake the same angle With the upper face ot' frame Athat the sides do.

E is a slide gage, which determines the amount of metal to be turned down. It is adjusted by means of nut e, which moves in slot e. Slot e is in arm e, which is secured to frame A.

Operation: The sheet metal to be operated upon is placed upon the upper face of frame A. The slide-gage is placed at such adistance from the frame A as desired, (shown in Fig. 2,) and secured at the required distance by means of nut o. Clamping-plate B is then revolved down upon the plate and clamped securely by means ofclamp-handle D. By means of forming-plate C that part of the plate operated upon which is between the frame A and slide-gage E is turned down upon the side of the frame, as shown in Fig. 2. The sheet metal is turned about in order to operate upon the opposite end of the sheet. The end first bent down is inserted in one of the slots a, and the sides in succession pressed down upon the side of frame' A by means of forming-plate G. When the edges of the metal have been turned down, as above described, the corners are made to overlap by the use ot' a mallet, which completes the .formation of the dish or pan.

Having described my invention and mode of operating its various parts, I make the 4following claim:

The frame A, having slots a, clamping-plate B, forming-plate C, and slide-gage E, all constructed as above described, and for the purpose set forth.

WM. H. HENDERsoN.

Attest:

J oHN F. LUHRING, R. N CARTER. 

